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Finding the Fourth Proportional to 662,403.88, 990,553.74 and 491,947.48

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Solution

The fourth proportional to 662,403.88, 990,553.74 and 491,947.48 is: 735,654.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,403.88 : 990,553.74 = 491,947.48 : x
  2. Step 2: Convert to fraction form
    662,403.88/990,553.74 = 491,947.48/x
  3. Step 3: Cross multiply
    662,403.88x = 990,553.74 × 491,947.48
  4. Step 4: Simplify right side
    662,403.88x = 487,300,416,197.58
  5. Step 5: Solve for x
    x = 487,300,416,197.58/662,403.88
  6. Step 6: Final answer
    x = 735,654.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.